505013320 has 64 divisors (see below), whose sum is σ = 1302768000. Its totient is φ = 172592640.

The previous prime is 505013317. The next prime is 505013321. The reversal of 505013320 is 23310505.

It is not an unprimeable number, because it can be changed into a prime (505013321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89956 + ... + 95404.

It is an arithmetic number, because the mean of its divisors is an integer number (20355750).

Almost surely, 2^505013320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505013320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (651384000).

505013320 is an abundant number, since it is smaller than the sum of its proper divisors (797754680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505013320 is a wasteful number, since it uses less digits than its factorization.

505013320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798 (or 5794 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 505013320 is about 22472.5014184002. The cubic root of 505013320 is about 796.3444255791.

Adding to 505013320 its reverse (23310505), we get a palindrome (528323825).

The spelling of 505013320 in words is "five hundred five million, thirteen thousand, three hundred twenty".